SQ-1-Gate > MS-20-M Junction in > Junction out > Trig in (Lower most)
SQ-1-CV-A Out > MS-20-M Junction in > Junction out > Total (or Freq for use with MG)
CV-out to TOTAL. You can also use FREQ for weird sequencing with the modulation generator.
Use the Frequency Modulation (MG/T.EXT) knob. Turn it open for affecting the pitch. On the SQ-1 you can adjust the different pitch for each note.